Owner can add booked periods to every property he submits from User Dashboard. Owner can DELETE these booked periods at any time.
How to ADD booked period
Select booking dates by clicking on the dates (selection is red)
Booked dates are blocked in calendar, and in front end booking form:
How the booked dates look in the booking form:
How to delete booked period
You can mark dates as booked from All In One calendar as well -help https://help.wprentals.org/article/all-in-one-calendar-view/
In all in one calendar owner form looks like this.